Aram Chaos.Sibille et al. 2015.
Several past episodes of groundwater recharge and infilling by liquid water, ice, and other materials. Chaos terrain caused by melting of deep ice reservoirs that triggered the collapse of terrain followed by catastrophic water outflows such as Ares Vallis .Groundwater represents a protected subsurface environment. Past water also indicated by high concentrations of hematite, Fe-oxyhydroxides, mono-hydrated and poly-hydrated sulfates.

Mawrth Vallis.Horgan et al. 2015.
It contains the most extensive, >200 m thick light-toned layered deposits, exposed outcrop of clay-rich rocks emplaced as sediments and weathered in situ to form clayrich soils in the Noachian. Clay mineral abundances in excess of 50 wt.%, the largest clay abundance detected on Mars. Also includes the dichotomy boundary and the outflow channel with streamlined islands potentially preserving flood deposits. Hydrothermal deposits may be present within halo-bonded fractures on the plateau.

McLaughlin Crater. Michlski et al. 2015.
McLaughlin Crater is a Noachian impact crater that contained a deep (~500 m) lake >3.8 Ga. The clays and carbonates on the floor of the crater are overlaid by dark airfall deposit that is likely volcanic ash. McLaughlin Crater is located at the boundary of a) the ancient Noachian crust, b) the northern plains, and c) the Mawrth Vallis deposits.

Huygens crater.Ackiss et al. 2015. (2 proposals)
Landing site 1 has a larger phyllosilicate/carbonate deposit and mafic plains that can be age dated while Landing site 2 gives access to the crater wall and valley networks that flow into the crater. Carbonates within the Huygens basin are exposed by the cratering process and are associated with phyllosilicates.

Deuteronilus Mensae.Plaut 2015.
Dichotomy boundary. Near a small massif partially surrounded by a lobate debris apron consisting primarily of nearly pure water ice hundreds of meters thick. Hesperian age plains terrain showing indications of periglacial processes; chaotic terrain that is interpreted to be a remnant of the central peak.

Ismenius Cavus.Mangold et al. 2015.
Fluvial and deltaic landforms, clay-bearing sedimentary deposits and glacial landforms. In Ismenius Cavus six valley networks converge including Mamers Vallis. Most valley floors are overlaid by lineated valley fills and lobate debris aprons. Layered unit contains iron-rich smectites. Phyllosilicates are found in meters-scale thick layers. Low albedo is due to pyroxene containing dark sand. Several deltaic landforms with sedimentary deposits that are bottom-sets of the paleolake. Arabia Terra dust is supposed to contain as much as 10% of water.

“Mesopotamia”.Gallegos and Newsom 2015a.
Between Niger/Dao Vallis and Harmakhis Vallis. Noachian age rocks within the moraines and till eroded from the high-relief massifs. Volcanic units. Negele Crater is a young, complex crater in Hesperian volcanics and possibly the ice-rich apron units.

Hale Crater.Stillman et al. 2015.
Impact-induced hydrothermal activity: Hale formed in the Amazonian (>1 Ga) and released ~10 km3 of liquid water, fluvially modifying nearby channels. Hundreds of RSL occur in the large uplifted mountains of the crater’s central peak.

W Noachis Terra.Hill and Christensen 2015.
The closest occurrence of chloride deposits to glacier-like forms. Chloride deposits are located at the center of an ~40km diameter basin with both inlet and outlet channels, suggesting it was once an overfilled paleolake system where water would have ponded and evaporite minerals could have formed. A ~25km diameter crater contains features associated with subsurface water ice, including lineated valley fill, pasted terrain, viscous crater fill, gullies, and possibly recurring slope lineae. Outcrops of Late Noachian material that lie within a region of remnant crustal magnetism.

Acheron Fossae.Viola et al. 2015.
A series of grabens and ridges surrounded by later Hesperian/Amazonian lava flows from the Tharsis region. Evidence for Amazonian glacial and periglacial activity. Meandering channel-like features in close proximity to apparent ice flow features. Material interpreted as rock glaciers on the floors of the grabens.